Home / 6,820.20-10,219.50-2,655.18

Finding the Fourth Proportional to 6,820.20, 10,219.50 and 2,655.18

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Solution

The fourth proportional to 6,820.20, 10,219.50 and 2,655.18 is: 3,978.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,820.20 : 10,219.50 = 2,655.18 : x
  2. Step 2: Convert to fraction form
    6,820.20/10,219.50 = 2,655.18/x
  3. Step 3: Cross multiply
    6,820.20x = 10,219.50 × 2,655.18
  4. Step 4: Simplify right side
    6,820.20x = 27,134,612.01
  5. Step 5: Solve for x
    x = 27,134,612.01/6,820.20
  6. Step 6: Final answer
    x = 3,978.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.